7921105699 has 16 divisors (see below), whose sum is σ = 8661933504. Its totient is φ = 7199337600.

The previous prime is 7921105693. The next prime is 7921105727. The reversal of 7921105699 is 9965011297.

7921105699 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7921105699 - 2³ = 7921105691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7921105691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 752557 + ... + 763009.

It is an arithmetic number, because the mean of its divisors is an integer number (541370844).

Almost surely, 2^7921105699 is an apocalyptic number.

7921105699 is a deficient number, since it is larger than the sum of its proper divisors (740827805).

7921105699 is a wasteful number, since it uses less digits than its factorization.

7921105699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11358.

The product of its (nonzero) digits is 306180, while the sum is 49.

The square root of 7921105699 is about 89000.5938126258. The cubic root of 7921105699 is about 1993.4037435342.

The spelling of 7921105699 in words is "seven billion, nine hundred twenty-one million, one hundred five thousand, six hundred ninety-nine".